what is the gram formula mass of CaSO4*2H20?
Look up the masses on the periodic table and add them.
1 Cu
1 S
4 O
5 H2O
i got 112.61 is that right ?
No. I've rounded below but you need to do it more accurately; how accurately depends upon your instructions.
Cu = about 63
S = about 32
O = 16*4 = 64
5 H2O = 5*(2+16) = about 90.
All of that adds up to more than 112.
Why did you use Cu instead of Ca
To find the gram formula mass of CaSO4*2H2O, you need to calculate the sum of the atomic masses of all the elements in the formula.
Step 1: Identify the elements in the formula:
The formula CaSO4*2H2O contains three elements: calcium (Ca), sulfur (S), hydrogen (H), and oxygen (O).
Step 2: Find the atomic masses of the elements:
You can find the atomic masses of the elements on the periodic table. Here are the atomic masses of the elements involved:
- Calcium (Ca): 40.08 g/mol
- Sulfur (S): 32.07 g/mol
- Hydrogen (H): 1.01 g/mol
- Oxygen (O): 16.00 g/mol
Step 3: Determine the number of atoms for each element:
The formula indicates that there is one calcium atom (Ca), one sulfur atom (S), four oxygen atoms (O), and four hydrogen atoms (H2O = 2H * 1O * 2).
Step 4: Calculate the gram formula mass:
Now you can calculate the gram formula mass by summing up the contributions of each element.
Gram formula mass = (Ca atomic mass * number of Ca atoms) + (S atomic mass * number of S atoms) + (O atomic mass * number of O atoms) + (H atomic mass * number of H atoms)
Plugging in the values, we get:
Gram formula mass = (40.08 g/mol * 1) + (32.07 g/mol * 1) + (16.00 g/mol * 4) + (1.01 g/mol * 2 * 4)
Calculating this will give you the gram formula mass of CaSO4*2H2O.
CaSO4
Ca=40
S=32
O=16x4
40+32+16×4
416amu